Bone implant

Abstract

The present invention relates to a bone implant device, comprising a body having a first part and an opposite second part, the first part and an opposite second part defining a longitudinal axis, the first part including an external thread extending from a cylindrical part to the distal end of the body, the external thread comprising a first thread part having a first radius measured from the longitudinal axis and a second thread part having a second radius measured from the longitudinal axis. The first radius is larger than the second radius, the first thread part is a cutting part, and the second thread part is a contact surface. The first part may include one or more cavities for storing bone fragments while the bone implant is in use.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a bone implant device.BACKGROUND OF THE INVENTION[0002]There are several situations where a bone implant is needed. Below is listed some situations where a bone implant is usually used.[0003]When a person has a fractured bone there is a need for bringing two or more bone parts together so that the bone may repair the fracture.[0004]When a person needs a tooth implant mounted in the jaw-bone, there is a need for an implant device to hold the tooth implant.[0005]When a person has a hearing impediment there may in some situations be a need for mounting a hearing directly to the bone of the skull. For mounting such a hearing aid there is a need for an implantable device for attaching the hearing aid to the skull. The implant should not damage the bone structure in a way that will lead to necrotise of the surrounding bone material. Usually a relatively large hole is predrilled before the implant is inserted. Threads on the impl...

AI Technical Summary

Benefits of technology

The present invention provides an implant device for bones that has a minimal gap between the bone and the implant device, resulting in a higher stability and a faster healing process. Additionally, the implant device may have a hollow space at the distal end of the first part to improve bone growth and stability.

Problems solved by technology

Some geometry of previous implants, in all applications mentioned above, has shown to cause compression and / or heating of the bone material thus damaging the bone material; sometimes to such a degree that the bone dies.

The friction, compression and the energy exerted when inserting the bone implant have shown to cause damage to the bone, also with subsequent bone necrosis.

This however leads to other problems such as a low initial / primary stability as the implant device will not have sufficient grip in the bone, further the relative low amount of bone material will have to grow back which gives the patient a long recovery period.

Damage to bone due to the insertion of a bone implant will cause longer healing times and thus more inconveniences to the users.

Also, necrotic bone material may be a serious problem, especially in skull bone.

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